Cement-block mold.



J. F. CROWLEY, JR-

CEMENT BLOCK MOLD. APPLICATIONFILED FEB. 21,1917.

Patented Dec. 11,1917. I

2 SHEETS-SHEETI in &..

um/44km J. F. CROWLEY, JR.

CEMENT BLOCK MOLD.

'APPLICATION men FEB-2h-l9l7.

Patented Dec. 11, 191 7.

2 SHEETS-SHEET 2 344041144301 TIP. BRmwLJEY-JR I l fimaso fitter M 0-1 0 JAMES FRANCIS CROWLEY, JR., OF LARUE, OHIO.

CEMENT-BLOCK MOLD.

Application filed February 21, 1917. Serial No.-150,184.

To all whom it may concern:

Be it known that I, JAMES FRANCIS CROW- LEY, Jr., a citizen of the United States, re siding at Larue, in the county of Marion and State of Ohio, have invented certain new and useful Improvements in Cement- Block Molds; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to new and useful improvements in molds for manufacturing cement building blocks.

The principal object ofthe invention is to produce a very simply constructed mold formed of a few number of parts which may be quickly assembled or disassembled.

Another object of the invention is to provide' a mold of this character by which blocks may be molded by what is known as the wet process. p

With these and many other objects in view, the invention resides in the novel features of construction, combination, and arrangement of parts which will be hereinafter more particularly described and claimed and shown in the drawings wherein:

Figure 1 is a plan view partly in section of a mold constructed in accordance with my invention;

Fig. 2 is a side elevation of the parts shown in Fig. 1;

Fig. 3 is a vertical longitudinal section on the plane of the line 3-3 of Fig. 1;

Fig. 4 is an end view of the mold;

Figs. 5 and 6 are vertical transverse sections on the lines 55 and 66 of Fig. 1;

Fig. 7 is a plan view of a number of molds showing how the same may be held together;

Fig. 8 is a side elevation partly broken away of a modified form of mold, for use particularly in forming silo building blocks;

Fig. 9 is a section on the line 99 of Fig. 8; and

Fig. 10 is a plan view of a block which may be formed in this mold, said block having a face constructed of a slab of stone and a body of cement. Referring more particularly to the several figures of the accompanying drawings, wherein similar reference characters indicate like parts throughout the several views,

Specification of Letters Patent.

Patented Dec. 11, 1917.

1, a pair of end plates 2, and a bottom or pallet 3, these several parts being held together in an improved manner. I

Each of the side plates 1 is preferably rectangular and of a size corresponding to which is to be formed in the mold. In practically all 'types of building blocks one or more vertlcal openings are formed through the center, so that when the same are disposed one upon the other to form the wall of the building, there. will be a free circulation of air through the blocks' In the.

present instance provision is made for forming these openings by the cores 4, two of which are made integral with each of the plates 1. Each of these cores is substantially frusto-conical with the small ends the size and character of the building block I thereof extending inwardly toward the other plate when said side plates are disposed in operative position. I The cores are connected by an inwardly extending portion 5, which will form a channel in the top and bottom of ach block when the same is molded. The inner ends of each of the "cores 1 is closed as shown at 6 and provided with a keyhole slot 7, and when the two plates are disposed in operative position with these inner ends of the cores engaging each other, these keybolts laterally until their heads may pass through said large portions of the slots.

The end plates 2 are also preferably rectangular and of a size to closely fit between the ends of the side plates as shown in the several figures of the drawings. At the top and bottom of each ofrthe end plates and on their opposite side edges are formed the outwardly projecting cars 10 and 11 which are disposed in notches 12 and 13 formed in the upper and lower edges of the side plates 1. In assembling these plates the ears 10 and 11 are placed in their respective notches, and when the bolts and nuts 8 and 9 are tightened, these end plates will be securely locked in position so that it will be impossible to disassemble the plates until the nuts 9 are loosened. Each of the end plates is further provided with an inwardly extending portion 14: by which the usual channel in the end of the completed block is formed, the adjacent channels receiving the ordinary binding material to hold the adjacent blocks together. The upper edge of each end plate has an outwardly laterally extending flange 15 formed integrally there with, the upper edge of said flange being in the plane of the upper edges of the side plates.

The bottom or pallet 3 of this improved mold forms the face of the block, and it may be plain or of any other configuration to imitate cut stone and the like. The opposite end edges of this pallet rest upon a pair of spaced apart inwardly extending lugs 16 which project from the lower portion of each end plate 2 as shown in Fig. 3. The opposite ends of the pallet are provided with feet 17 to space the same above the ground so that it may be readily lifted.

In the use of this improved mold, assumingthat the same has been assembled, cement in'a rather wet condition is poured into the open top of the mold and allowed to settle around the cores 4 or inwardly extending portions 5. This cement must be sufficiently wet to readily flow and entirely fill up the mold without tamping or otherwise pressing the material into shape. AnyQmold which can be used with the wet process of forming building blocks will form such blocks much more cheaply than those manufactured by the dry process in which it is necessary to use expensive machinery for pressing the material. After the cement has been poured into the mold until it is level with the top edges thereof, the same may be carried to a suitable place to permit it to be dried. Carriage is facilitated by the goosenecked notches 18, one of which isv formed in the end of each side plate, it being obvious that a handle of suitable design may be connected with the adjacent notches at each end of the mold.

As soon as the cement has set, which occurs within from five to twenty-four hours depending upon the climatic conditions and so forth, themold is disassembled by loosening the nuts 9 of the bolts 8 and entirely removing the same from both of the cores of each plate, vor moving the heads of the bolts until they may be slipped through the large portions of the keyhole slots, and then moving the side plates outwardly away from each other. This causes the disengagement of the ears 10 and 11 from the notches 12 and 13, and readily permits the end plates to'be disengaged from the partially hardened block. The parts of the plates are preferably immersed in a solution of any suitable form of oily compound to coat the same and to prevent the' cement from sticking thereto.

In Fig. 7 a number of molds constructed as above described are shown connected together to produce a battery. These molds are held together by a pair of rods which extend through the openings 7 in the several cores, said rods being provided with nuts on their opposite ends so that all the parts may be tightly clamped together. By this arrangement a number of molds may be poured at one operation, and the whole transported to a suitable drying place. The parts of the molds readily fall apart when the rods are removed.

The blocks which are formed in ,the molds above described and shown in Figs. 1 to .7 are used for building ordinary houses, stablesand the like, or those buildings whose walls are flat. In Figs. 8 and 9 is illustrated a mold used for forming silo blocks or other buildings whose outer facesare curved. In this instance the pallet 8, is curved a sufficient extent, and the other plates are shaped to conform thereto. It is usually necessary in constructinga silo to reinforce the same with a number of bands which surround the completed building at spaced intervals. The bands are also preferably used ,95 when the structure is built of cement blocks formed in this mold. However, these bands will be embedded in the blocks themselves, provision being made in the block to receive the same. These bands are disposed in chani nels formed in the block when the .S une is cast in the mold, said channels being shaped by the inwardly extending portions 20011 the side plates 1. i i

It is well known that the cost of marble, granite, and other expensive stories pre eludes their use in ordinary buildings. This expense may be greatly lessened by producing a building block having merely the outer face formed of marble or the like. I may construct such blocks in the molds as shown in the accompanyingdrawings. This is accomplished by providing a thin plate of ,the desired kind of expensivestone, placing it in the bottomof the mold or the pallet v thereof, and then pouring the cement therein. When the material has hardened a building block has been formed which hasall thev appearance of being a'solid block of expensive stone when viewed from the face 1270,

thereof. In Fig. 10 is shown a'b uilding block constructed in this manner, 21 being the plate of marble or the like, which is in effect a veneer, and 22 represents the cement or concrete backing.

Having thus described my invention, what I claim as new is:

1. A .collapsible mold of the class described comprising a pair of side plates, a core fixed to the adjacent side of each of -13 said plates, the Walls of said cores being tapered inwardly, the smaller end of each core being closed and disposed in engage ment with the other, said ends being flat and provided with alined slots, a fastening element in said slots, end plates connected to the ends of said side plates, and a bottom plate.

2. A collapsible mold of the class described comprising a pair of side plates, a core formed integrally with each of said plates and extending inwardly, means for uniting the inner ends of said cores to hold said plates in rigid spaced apart position, a pair of end plates, and a bottom plate.

A collapsible mold of the class described comprising a pair of side plates each having a pair of openings in each end portion, one being adjacent the upper edge and the other the lower edge, a core fixed to the adjacent side of each of said plates and extended inwardly, means for uniting the inner ends of said cores to hold said plates in rigid spaced apart relation, a pair of end plates, a pair of ears extending from each side edge of each of said end plates aiid disposed in said openings, and a bottom p ate.

4. A collapsible mold of the class described comprising a pair of side plates, a core fixed to the adjacent side of each of said plates, means for uniting the inner ends of said cores to hold said plates in rigid spaced apart relation, a pair of end plates disposed between the ends of said side plates, a pair of spaced lugs on the inner surface of each of said end plates adjacent its bottom edge, and a bottom plate, the same having its opposite ends resting upon said lugs.

In testimony whereof I have hereunto set my hand in the presence of two subscribing wltnesses.

JAMES FRANCIS CROWLEY, JR.

Witnesses:

THOS. P. Donn, HELEN A. SUTTON.

Copies of this. patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

